1. Alan Barr, Student Community Action (London: National Council for Social Service, 1972), 5.
2. “Introducing NUS” c. 1957, WP 7560, British Library, 23; International Voluntary Service for Peace, Annual Report 1956; Sir John Lockwood, “The Call for Volunteer Service Overseas,” Social Service Quarterly 37, no 2 (Autumn 1963): 50.
3. David Wainwright, The Volunteers: The Story of Overseas Voluntary Service (London: Macdonald, 1965), 74; The Hidden Force: A Report of the International Conference on Middle Level Manpower (New York: Harper and Row, 1963).
4. Jemma Purdey, From Vienna to Togyakarta: The Life of Herb Frith (Sydney: University of New South Wales Press, 2011), 74–84.
5. Robert Morris, Overseas Volunteer Programs (Lexington, MA: Lexington Books, 1973), 13.